Abstract: description is given of a large number of trajectories of Mathieu's equation made on the ENIAC in 1948 and available at BRL. A large chart describing the behaviour of the solutions is given. The occasion is taken to review the essentials of the Mathieu theory for the benefit of the occasional user-proceeding from the point of view of an inspection of the numerical data.

A survey was made on methcds and related costs of disposing of radioactive wastes as practiced in 1955 by twelve atomic industry installations. Wherever possible, estimated unit costs of differentiated stages of waste handling are shown- these are integrated to show the over-all scope of waste dispesal practices at each site. Tabular data summarize costs and operation magnitades at the installations. A pattern is established for standardizing the reporting of fixed costs and equipment unsage costs. The economy of solid waste volume reduction is analyzed. Material costs are listed. An outline for recording monthly waste disposal costs is presented. Obvious conclusions drawn from the factual data are: that it is more expensive per cubic foot to handle high-level wastes than low-level wastes. and that land disposal is less expenaive than sea disposal. A reexamination of baling economics shows that high compression of solid wastes is more expensive than simpler forms of compaction. (auth)

Client card describing work completed at the Roman Bronze Works Foundry for the American Iron Works, Inc., including a job number, brief description, monetary amount, and dates associated with each entry. Piece included: bronze cast plaque (2 copies; 14").

Letter from I. H. Kempner to Mr. and Mrs. Eric Goldberger discussing their inability to attend the wedding of Goldberger's son as it falls on the same day as Kempner's wedding anniversary.

Letter from Hugo Goldberger to Mr. and Mrs. Kempner inviting them to his wedding while expressing his gratitude for their help in his immigration to the United States.

Letter from Daniel W. Kempner to Black & Decker Manufacturing Co. requesting that missing attachments for his sander be replaced.